问题描述:
eclipse新建maven项目,执行maven install时报如下错误:
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project maven-demo: Compilation failure
[ERROR] Unable to locate the Javac Compiler in:
[ERROR] C:\Program Files\Java\jre8\..\lib\tools.jar
[ERROR] Please ensure you are using JDK 1.4 or above and
[ERROR] not a JRE (the com.sun.tools.javac.Main class is required).
[ERROR] In most cases you can change the location of your Java
[ERROR] installation by setting the JAVA_HOME environment variable.
[ERROR] -> [Help 1]
如下图:
解决方法:
- Window -> Preferences -> Java -> Installed JREs(如果列表中包含有效JRE忽略此步骤)。点击”Add”按钮,选择默认的”Standard VM”, 点击”Next >”, 点击”JRE home”右边的”Directory”选择文件夹C:\Program Files\Java\jdk1.8.0_162\jre(如果你未在C:\Program Files\Java\jdk1.8.0_162\目录下找到jre文件夹,见说明),确定。如下图:
- 回到”Installed JREs”界面,在刚添加的”jdk1.8.0_162”打上勾。
- 打开 “Installed JREs” -> “Execution Environments”, 点选界面左侧的”JavaSE-1.8”,然后在右侧点选”jdk1.8.0_162”,如下图:
- 重启Eclipse
说明:
如果你未在C:\Program Files\Java\jdk1.8.0_162\目录下找到jre文件夹,参考如下:
我自己在装jdk时,安装完成后的目录如下:
jre目录并不在C:\Program Files\Java\jdk1.8.0_162目录下,需拷贝jre8文件夹,重命名为jre,放到C:\Program Files\Java\jdk1.8.0_162目录。